|Something and Nothing,
Truth and Lies
Before the beginning, there was a 50% chance that nothing would exist and a 50% chance that something would exist. In order to determine whether something or nothing would exist, they decided to flip a coin. However, in order for there to be a coin to flip, the coin had to exist, so something had already won. Therefore, we exist because something is a lying, cheating bastard.
Many religions have a strong sense of dichotomy between truth and lie. In Zoroastrianism, there are two gods, one of truth, one of lies. In Norse polytheism, the chief god is Odin, who represents wisdom and truth; his main adversary is Loki, god of lies and trickery. In Christianity, Jesus is "The Truth, The Way, and The Life," while Satan is often described as a trickster and liar.
However, in each of these cases, existence is NOT BASED ON THE TRUTH. According to Zoroastrianism, when the god of truth defeats the god of lies, existence will end. According to Norse polytheism, Ragnarok (the end of the world) will be the final battle between Odin and Loki, and the world will end when the god of truth defeats the god of lies. According to Christian prophecy in Revelations, at some point all the true believers will be swept up, leaving the world to the lie.
The more closely you look at existence, especially at life and at the psychology of most "higher" organisms, the more apparent this becomes. Take dating: the more obvious it is that you want a relationship, the more likely the other person is to run from you. Teasing them, pretending not to like them, and generally playing "hard to get" makes the other person try harder to get you. Take economics:
The more you demand, the more you have to pay for what you receive; the more you supply, the less you receive for what you give. Take physics: every action causes an equal but OPPOSITE reaction. Take politics: attempts to stamp out drug use, alcohol use, gambling, prostitution, poverty, and hunger have a history of worsening the problem.